Model 3440 Appendix A–15
Installing and Using Alkaline Batteries
If your Model 3440 gauge is installed with the alkaline battery
backup, you can power the gauge using five AA alkaline
batteries. To install the batteries:
Turn the gauge off.
Loosen the four captive screws on the control unit.
Carefully lift the control unit from the gauge.
Unplug the ribbon cable from the control unit by pushing
the levers on either side of the ribbon down.
Install five standard AA alkaline batteries into the battery
holder.
Set the battery select switch to the ALKALINE position.
Plug the ribbon cable into the control unit.
Attach the control unit to the gauge with the four captive
screws.